65.3 Seimic design ofstructural walk 6.5.4 Shear Capacity checking of wall section The desig ctionnsregheedegos y=功 nder -a成+成 6.105 V-1I (M) a学-心 6.106 V-n(M+M)ll.+Va Where is 13,1.2,1.I for Girade 1,2,3 6.5.4 Shear Capacity checking of wall section 口 cofscwallsder 是) 6.19 口ner .s04-aw斯，】6 当-4 46.121) 7.) (6.124 6.5.5 Design of Structural Wall 10.6,A+0.8N) ction joirt fails to satisty thi at the bo ement of tle beam 4 4 • The design shear force at bottom section in strengthened regions （底部加强区）of a structural wall For structure walls in grade 1,2,3 frames, is 1.6, 1.4 and 1.2. For those with Grade 1 at Intensity 9, • Design shear force at end section of a coupling beam （连梁） with a span depth ratio greater than 2.5 • Where is 1.3, 1.2, 1.1 for Grade 1, 2, 3 V vwVw n Gb r b l V vb (Mb  M )/l V vw 6.5.3 Seismic design of structural walls 1.1 ( / ) V M M V  wua w w vw  Load carrying capacity of normal cross section of wall under eccentric axial loading Walls under eccentric compressive force ( ) 1 / / s y s s sw c RE N  A f  A   N  N  (5.74)               ) 2 ) ( 2 ( 1 / 0 / / w f sw c f s y w RE h h M M N h M A f h  (5.75) (6.105) (6.106) 6.5.4 Shear Capacity checking of wall section  Walls with a rectangular section, subjected to a large eccentric tensile force           wu u RE M e N N 0 0 1  (5.88) 2 / 2 ) 2 ( / 0 / 0 w f sw yw f wu s y w h h A f h M A f h     (5.90) (6.119) (6.121) 6.5.4 Shear Capacity checking of wall section  Diagonal shear resistance of structural walls under eccentric compressive loading  Diagonal shear resistance of structural walls under eccentric tensile loading  Seismic shear resistance of coupling beams           0 0 (0.4 0.1 ) 0.8 0.5 1 1 w sh yh w t w w RE h s A f A A V f b h N   (5.91)             0 0 (0.4 0.1 ) 0.8 0.5 1 1 w sh yh w t w w RE w h s A f A A V f b h N (5.92)        0  0 0.05 0.7 1 b sv c b b yv RE b h s A V f b h f  (5.93) (6.122) (6.123) (6.124)  Shear strength check on the construction joints （施工缝） of structural walls Horizontal construction joints （水平施工缝） are potential planes of weakness for structural walls.  If shear resistance of a construction joint fails to satisfy this requirement, additional steel reinforced bars are needed perpendicular to the horizontal joint, with sufficient anchorage length each side of the joint. V  f A N y s RE wj 0.6 0.8 1    (5.94) 6.5.5 Design of Structural Wall  Plane layout  Vertical layout  Axial-force ratio  Boundary element  Strengthening region at the bottom  Minimum ratio of reinforcement of wall  Construction requirement of tie beam